Hierarchy/Derived subclasses
224 / 101 | -> 191 | -> 235 | -> 236 | -> 239 |
uspto searches
Patent Apps in 224/239Granted Patents in 224/239
Use the links above or do an advanced search in ppubs for:
(224/239.ccls.)
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.